NAVY PRECISION OPTICAL INTERFEROMETER MEASUREMENTS OF 10 STELLAR OSCILLATORS

被引：22

作者：

Baines, Ellyn K. ^{[1
]}

Armstrong, J. Thomas ^{[1
]}

Schmitt, Henrique R. ^{[1
]}

Benson, James A. ^{[2
]}

Zavala, R. T. ^{[2
]}

van Belle, Gerard T. ^{[3
]}

机构：

[1] Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA

[2] US Naval Observ, Flagstaff, AZ 86001 USA

[3] Lowell Observ, Flagstaff, AZ 86001 USA

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 781卷 / 02期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

stars: fundamental parameters; stars: oscillations; techniques: high angular resolution; techniques: interferometric; SOLAR-LIKE OSCILLATIONS; ANGULAR DIAMETERS; CHARA ARRAY; ATMOSPHERIC PARAMETERS; KEPLER-MISSION; TAU-CETI; ASTEROSEISMOLOGY; STARS; PHOTOMETRY; RADIUS;

D O I：

10.1088/0004-637X/781/2/90

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the Navy Precision Optical Interferometer, we measured the angular diameters of 10 stars that have previously measured solar-like oscillations. Our sample covered a range of evolutionary stages but focused on evolved subgiant and giant stars. We combined our angular diameters with Hipparcos parallaxes to determine the stars' physical radii, and used photometry from the literature to calculate their bolometric fluxes, luminosities, and effective temperatures. We then used our results to test the scaling relations used by asteroseismology groups to calculate radii and found good agreement between the radii measured here and the radii predicted by stellar oscillation studies. The precision of the relations is not as well constrained for giant stars as it is for less evolved stars.

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